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Updated: Jun 24, 2026
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Hortonworks Hadoop 2.0 Certification exam for Pig and Hive Developer Sample Questions:
1. MapReduce v2 (MRv2/YARN) is designed to address which two issues?
A) Standardize on a single MapReduce API.
B) Resource pressure on the JobTracker.
C) Ability to run frameworks other than MapReduce, such as MPI.
D) Single point of failure in the NameNode.
E) Reduce complexity of the MapReduce APIs.
F) HDFS latency.
2. You have written a Mapper which invokes the following five calls to the OutputColletor.collect method:
output.collect (new Text ("Apple"), new Text ("Red") ) ;
output.collect (new Text ("Banana"), new Text ("Yellow") ) ;
output.collect (new Text ("Apple"), new Text ("Yellow") ) ;
output.collect (new Text ("Cherry"), new Text ("Red") ) ;
output.collect (new Text ("Apple"), new Text ("Green") ) ;
How many times will the Reducer's reduce method be invoked?
A) 5
B) 3
C) 0
D) 1
E) 6
3. Examine the following Hive statements:
Assuming the statements above execute successfully, which one of the following statements is true?
A) The file named File1 is moved to to/user/joe/x/
B) The contents of File1 are parsed as comma-delimited rows and stored in a database
C) Hive reformats File1 into a structure that Hive can access and moves into to/user/joe/x/
D) The contents of File1 are parsed as comma-delimited rows and loaded into /user/joe/x/
4. In a MapReduce job, you want each of your input files processed by a single map task. How do you configure a MapReduce job so that a single map task processes each input file regardless of how many blocks the input file occupies?
A) Write a custom MapRunner that iterates over all key-value pairs in the entire file.
B) Write a custom FileInputFormat and override the method isSplitable to always return false.
C) Set the number of mappers equal to the number of input files you want to process.
D) Increase the parameter that controls minimum split size in the job configuration.
5. You have a directory named jobdata in HDFS that contains four files: _first.txt, second.txt, .third.txt and #data.txt. How many files will be processed by the FileInputFormat.setInputPaths () command when it's given a path object representing this directory?
A) None, the directory cannot be named jobdata
B) Four, all files will be processed
C) One, no special characters can prefix the name of an input file
D) Three, the pound sign is an invalid character for HDFS file names
E) Two, file names with a leading period or underscore are ignored
Solutions:
| Question # 1 Answer: B,D | Question # 2 Answer: B | Question # 3 Answer: A | Question # 4 Answer: B | Question # 5 Answer: E |
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